Academic literature on the topic 'Couples – Togo'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Couples – Togo.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Couples – Togo"
1
Diallo, Aboudoulatif, Komi Zotchi, Povi Lawson-evi, Batomayena Bakoma, Essotolom Badjabaissi, and Eklu-Gadegkeku Kwashie. "Pesticides Use Practice by Market Gardeners in Lome (Togo)." Journal of Toxicology 2020 (September 22, 2020): 1–5. http://dx.doi.org/10.1155/2020/8831873.
Full textAbstract:
Pesticides are more and more used in African countries. The aim of this study is to evaluate the risk and the impact of pesticides on gardener’s health. It is a transversal descriptive study, which referred to vegetable growers, held in Lomé on the period from May 20 to June 5, 2017. Forty-eight (48) growers participated in the study. Men accounted for 70.8% of the study population against 29.2% of women. The level of education was primary (47.9%) in the majority of cases. Married people or couples represented 77.1% of cases. Most gardeners (72.9%) has no training in the use of pesticides. Pesticides were consistently applied (100%), including insecticides (72.7%), herbicides (9.1%), and fungicides (18.2%). Of 20 pesticides collected, 9 (45%) were approved by our authorities. Only 43.8% of growers were supplied with pesticides from authorized structures of agricultural products. Branches of plants (79.2%) were the spray means of most of the pesticides. Most gardeners (79, 2%) did not use personal protective equipment because of lack of resources for 81.6% of them. Water and environment contamination risk by pesticides was known by only 6.3% of gardeners. Among the adverse effects reported, pruritus was the majority in 85.4% of cases followed by headache (70.8%), cough (68.8%), and muscle pain (64.6%). The training of gardeners, monitoring and control of this informal sector, and the monitoring of unregistered pesticides will help to reduce the risk of poisoning of gardeners and consumers of vegetables as well as environmental pollution.
2
Pelei, Tagba, Osseyi G. Elolo, and Lamboni Raphael Courdjo. "Epidemiology of Use of a Traditional Spirit “Sodabi” in the General Population of Togo." European Scientific Journal, ESJ 12, no. 27 (September 30, 2016): 177. http://dx.doi.org/10.19044/esj.2016.v12n27p177.
Full textAbstract:
The purpose of this paper is to evaluate the profile of sodabi consumption in the Togolese population. This transverse descriptive study was conducted over a nine month period from June 9, 2013 to March 9, 2014, throughout the five regions of Togo. Findings demonstrated a clear profile of 2388 sodabi drinkers. 1672 (70.02%) men and 716 (29.98%) women. Prevalence was 62.45% in the population studied. Mean age was 35.3 years. Almost all subjects interrogated (98.48%) were togolese nationals. The study included the following ethnic and regional groups, the Kabyè-Tem ethnic group (43.59%) and the Paragourma-Akan groups (23.50%) were the most represented among the subjects interrogated. More than a third (25.67%) of subjects interviewed was unemployed with a higher unemployment rate in the Maritime region and Lomé Commune (37.16%). Most of the people interrogated (49.66%) were living as couples (married or cohabiting). 4.06% of subjects drank sodabi only. 51.40% of drinkers abused sodabi (40.59% men against 10.81% women). The prevalence of noxious alcohol use was high (12.35%) among unemployed participants. 25.51% of drinkers visited drinking establishments once a week and 22.10% almost every day. The euphoric effect of alcohol (45.23%) and friendly atmosphere (19.39%) of the drinking establishment were the main reasons for attendance (64.62%). Of the damage caused by the abuse of sodabi, 39.26% of subjects showed somatic or neurological complications and 60.74% psychological and psychiatric complications. Updating these data seems necessary, because combating excessive drinking is one of the main objectives of current togolese public health policy.
3
Cloetingh, Sierd, Hans Thybo, and Claudio Faccenna. "TOPO-EUROPE: The Geoscience of coupled." Tectonophysics 474, no. 1-2 (September 2009): 1. http://dx.doi.org/10.1016/j.tecto.2009.07.003.
Full text
4
Gbadoé, A. H., A. D. Gbadoé, M. Grunitzky-Békélé, A. K. S. Hodonou, O. Tidjani, and M. David-Prince. "Etude de l'immunité antitétanique dans le couple mère-enfant à Lomé (Togo)." Médecine et Maladies Infectieuses 28, no. 5 (May 1998): 423–27. http://dx.doi.org/10.1016/s0399-077x(98)80123-6.
Full text
5
Gent, Peter R., and Joseph J. Tribbia. "Simulation and Predictability in a Coupled TOGA Model." Journal of Climate 6, no. 10 (October 1993): 1843–58. http://dx.doi.org/10.1175/1520-0442(1993)006<1843:sapiac>2.0.co;2.
Full text
6
Webster, Peter J., and Roger Lukas. "TOGA COARE: The Coupled Ocean—Atmosphere Response Experiment." Bulletin of the American Meteorological Society 73, no. 9 (September 1992): 1377–416. http://dx.doi.org/10.1175/1520-0477(1992)073<1377:tctcor>2.0.co;2.
Full text
7
Cloetingh, S. A. P. L., and P. A. Ziegler. "TOPO-EUROPE: Coupled Deep Earth – Surface Processes in Europe." European Review 17, no. 3-4 (October 2009): 517–40. http://dx.doi.org/10.1017/s1062798709000933.
Full textAbstract:
TOPO-EUROPE is a multidisciplinary international research program that addresses the interaction of processes inherent to the deep Earth (lithosphere, mantle) with surface processes (erosion, climate, sea level), which together shaped the topography of Europe. The objective of the TOPO-EUROPE project is to assess neotectonic deformation rates and to quantify related geo-risks, such as earthquakes, flooding, landslides, rock falls and volcanism. Research, incorporating iterative data interactive modelling, focuses on the lithosphere memory and neotectonics, with special attention on the thermo-mechanical structure of the lithosphere, mechanisms controlling large-scale plate boundary and intraplate deformations, anomalous subsidence and uplift, and links with surface processes and topography evolution. The TOPO-EUROPE natural laboratories, in which these processes are analysed, cover a wide range of geodynamic settings. These include the post-collisional Alpine/Carpathian/Pannonian-Basin system, the very active Aegean-Anatolian and Apennines-Tyrrhenian orogens and back-arc basins, the Caucasus-Levant area in the Arabia-Europe collision zone, the Iberian Peninsula caught up between Alpine orogens, the meta-stable West and Central European Platform, the stable East-European Platform and the seismically active and elevated Scandinavian continental margin. The TOPO-EUROPE project is a component of the International Lithosphere Program and was initiated with the support of Academia Europaea. A European Science Foundation EUROCORES project provides funding for part of the TOPO-EUROPE research. Other parts of TOPO-EUROPE require support by participating organizations.
8
Kondoh, Essowè, Koledzi K. Edem, Magnoudéwa Bassaï Bodjona, Koffi Ani Kili, and Gado Tchangbedji. "Survey and Quantification of Household Waste in Tsévié City, Togo." Asian Journal of Chemistry 33, no. 4 (March 20, 2021): 802–6. http://dx.doi.org/10.14233/ajchem.2021.23024.
Full textAbstract:
The management of solid household wastes in Tsévié is the environmental concerns that the municipality faces on a daily basis. The aim of this study is to assess the amount of waste produced daily per resident in Tsévié and then to determine the socio-economic dynamics involved in the production of waste. A quantification campaign coupled with the socio-economic assessment are carried out. The households selected are chosen at random from different parts of the city and their number is defined on the basis of the size of the population so as to cover at least one hundredth of this population. The results obtained indicate that the ratios vary by neighborhood and by the lifestyle of population. These ratios range from 0.476 kg/hab/d to 0.587 kg/hab/d with an average of 0.54 0.10 kg/hab/d. The production of household wastes in the city of Tsévié is estimated at 13440 tonnes per year. For the other sectors, especially the central market and commercial structures, production is estimated at 744 tonnes and 149 tonnes of waste respectively per year. With an estimated annual waste production in the city of Tsévié of approximately 14,333 tonnes, urgent steps must be taken toward the efficient management of this waste.
9
Anonymous. "COARE of TOGA: Tropical Ocean Global Atmosphere (TOGA) Research Program Coupled Ocean-Atmosphere Response Experiment (COARE)." Eos, Transactions American Geophysical Union 70, no. 45 (1989): 1473. http://dx.doi.org/10.1029/89eo00347.
Full text
10
Maxwell, A., L. Costenaro, S. Mitelheiser, and A. D. Bates. "Coupling ATP hydrolysis to DNA strand passage in type IIA DNA topoisomerases." Biochemical Society Transactions 33, no. 6 (October 26, 2005): 1460–64. http://dx.doi.org/10.1042/bst0331460.
Full textAbstract:
Type IIA topos (topoisomerases) catalyse topological conversions of DNA through the passage of one double strand through a transient break in another. In the case of the archetypal enzyme, DNA gyrase, it has always been apparent that the enzyme couples the free energy of ATP hydrolysis to the introduction of negative supercoiling, and the structural details of this process are now becoming clearer. The homologous type IIA enzymes such as topo IV and eukaryotic topo II also require ATP and it has more recently been shown that the energy of hydrolysis is coupled to a reduction of supercoiling or catenation (linking) beyond equilibrium. The mechanism behind this effect is less clear. We review the energy coupling process in both classes of enzyme and describe recent mechanistic and structural work on gyrase that addresses the mechanism of energy coupling.
Dissertations / Theses on the topic "Couples – Togo"
1
Ametepe, Kossi Fofo Senyo. "Transformations familiales et contribution économique des femmes : effets sur les rapports de genre dans les familles togolaises face à la crise." Paris 10, 2008. http://www.theses.fr/2008PA100023.
Full textAbstract:
Dans la société togolaise contrairement â d'autres sociétés d'Afrique subsaharienne, le travail féminin est valorise voire exigé et les femmes contribuent fortement aux besoins du ménage. Les crises socio-économiques au Togo ont remis en cause la capacité des hommes â être les principaux pourvoyeurs des ménages. Au même moment les femmes arrivent â travers diverses stratégies â maintenir leur contribution au point de devenir dans certains ménages, les principaux pourvoyeurs. En outre Les femmes sont de plus en plus indépendantes dans le choix du conjoint et de nouveaux types de corésidence apparaissent, attestant d'un désir d'autonomie des femmes. Ce contexte semble être une aubaine pour une plus grande implication des femmes dans les prises de décisions importantes du ménage. Pour vérifier cela, nous avons analysé les relations complexes des rapports sociaux de sexe â l'aide des données des enquêtes sur les structures familiales et sur les biographies avec pour unité statistique d'analyse le couple. Les caractéristiques matrimoniales affectent peu les déclarations des responsabilités des femmes dans le couple et cela peut s'expliquer par le fait que les femmes continuent â adhérer aux modèles socialement valorisés de rapports de sexe. En revanche l'autonomie économique des femmes est le premier moteur de leur accès â la prise de décision. Toutefois, cela n'est que peu reconnu par les hommes. Il apparaît que les femmes déclarent être responsables des décisions ne nécessitant pas de frais alors que c'est l'inverse chez les hommes même les inactifs. Le pouvoir économique est donc loin d'être la seule clé pour l'indépendance des femmes et l'égalité de statut dans le coupleIn contrast of other sub-Saharan African societies, in Togolese society women activity are more valorised or sometimes demanded and women contribute highly in household expenditures. 'Me socio-economics crisis held in Togo sine the last decades, have questioning the men economic's capacity in the household. In the same time, women trought differents strategies as pluriactivity grew their economic autonomy and became in several households the main responsible of expenditures. Furthermore, marital patterns change and show that women have more autonomyto choice their husband. This context offers an opportinuity for women to have more power in décisions making or to participate in importants decisions in the household. This situation has analysed throught the complex gender relationships in the couples with family structure datasets and longiditunal data. One of the particularity of this research is the use of couple as statistic unit along the analysis. Matrimonial patterns affect few women's responsibilities in the couples. On the other hand, women's economic contribution are important to access for decision making in household. Active women and those who contribute more than husband, say they made more decisions. However, men don’t recognize that and then claimed all decisions. Generally, men, even the inactives, say they make decisions witch need money expenditures, and women the others decisions. The economic power is not the one key for women to have autonomy in decisions making and equalitity status in the couples
2
Steiber, Nadia, and Barbara Haas. "Too much or too little work? Couples' actual and preferred employment patterns and work hours mismatches in Europe." Staatsinstitut für Familienforschung an der Universität Bamberg (ifb), 2018. http://dx.doi.org/10.3224/zff.v30i3.03.
Full textAbstract:
The most widely cited European data on work hours mismatches at the couple level date back to the 1990s. The general gist of analyses of these data was that "overworked" dual-earner couples frequently preferred work hours reductions, especially those with childcare responsibilities. This study uses more recent data from the European Social Survey (2010-12) to update the available evidence on actual and preferred breadwinner models and on the occurrence and determinants of work hours mismatches among couples in Europe. The focus is on differences between demographic groups and countries in the degree to which cohabiting couples are either underemployed (working fewer hours than desired) or overemployed (working more hours than desired). Our analyses show that about one third of couples are underemployed, while only one in ten report being overemployed. We identify low education and the presence of children below school age as risk factors for underemployment, whereas highly educated women and fathers of teenagers tend to be overemployed. In a comparison of 16 European countries, we find couples in Greece, Ireland, Slovenia, and Spain to be most at risk of experiencing underemployment - in the countries that were most strongly affected by the recession. The effects of children on the experience of hours mismatches are found to vary across Europe - a particularly strong association of children below school age with parental underemployment is observed in Central and Eastern Europe, Finland, and Germany and a particularly weak one in Great Britain, Greece, Ireland, and Sweden.
3
Thiriot, Céline. "Démocratisation et démilitarisation du pouvoir : étude comparative à partir du Burkina Faso, Congo, Ghana, Mali et Togo." Bordeaux 4, 1999. http://www.theses.fr/1999BOR40018.
Full textAbstract:
La democratisation dans les regimes issus de coup d'etat militaire pose le probleme de la place et du role de l'armee dans le processus de transition de regime. L'etude comparative de cinq pays d'afrique noire permet de mieux cerner les facteurs qui entrent en ligne de compte pour expliquer les positions diverses des militaires et les issues toutes aussi diverses de la democratisation dans ces pays. Dans le regime issu d'un coup d'etat militaire, tel qu'il se presente a la veille de la transition, regime autoritaire de coalition militaro-civile, la base militaire etait variable, en fonction des facteurs de mobilisation ou de controle qui etaient utilises. La crise etait en germe dans la construction et le developpement meme de ces regimes, a cause des dissensions entre militaires restes dans l'institution (militaires-professionnels) et militaires assumant des fonctions politiques (militaires-politiques). La crise se materialise avec la transition democratique, reclamee par une opposition interne comme externe au regime, ou concedee par avance, dans une logique d'autolegitimation. Les diverses etapes de la liberalisation et ensuite de la transition proprement dite montrent la aussi la variete des roles et positions de l'armee en tant qu'institution mais aussi de certaines personnalites militaires. L'armee a controle la transition comme au burkina faso et au ghana, elle l'a arrachee et a participe a sa gestion comme au mali, elle l'a concedee ou laissee echapper, comme au congo et au togo, pour mieux la remettre sous tutelle militaire ensuite. Apres la periode officielle de transition, l'etat post-militaire presente des situations variees, ou l'armee est parvenue plus ou moins ouvertement a conserver une influence, forte de sa capacite d'intervention. Les conditions de ce que doit etre la consolidation democratique, etape idealement suivant la transition, sont importantes, et plus encore celles de la neutralisation politique de l'institution militaireDemocratisation in regimes set up through a military coup d'etat raises the problem of the position and role of the army in the regime transition process. The comparative study of five black african countries enables to define better the factors which are to be taken in consideration in order to explain both the diverse positions encountered within the army and the diverse consequences of democratisation in these countries. In the regime set up through a military coup d'etat, as it appears at the dawn of the transition, an authoritarian military-civil coalition regime, the military basis was variable depending on the mobilisation or control factors which were used. The crisis was already beginning to take root in the construction and the very development of these regimes, because of the dissension existing between the military who had stayed in the institution and the military taking on political functions. The crisis materialises with the democratic transition, either claimed by both an internal and external opposition to the regime, or granted in advance, as part of a self-legitimisation logic. The various stages of liberalisation and then of the actual transition show once more not only the variety of the roles and the positions of the army as an institution, but also of certain military personalities. The army either controlled the transition, as in burkina faso and ghana, or forced it and participated in its management, as in mali, or conceded it as in congo and togo, to bring it under military control later on. After the official transition period, the post military state shows varied situations, in which the army managed, more or less openly, to maintain an influence, thanks to its intervention capacity. A reflection is necessary upon the conditions of what the democratic consolidation must be, as a step ideally following the transition, and even more upon the political neutralisation of the military institution
4
Vekhoff, Pierre. "Ciblage de gènes impliqués dans le processus tumoral : conception d'outils provoquant des coupures TOPO-induites spécifiques de séquences." Paris 6, 2009. http://www.theses.fr/2009PA066236.
Full textAbstract:
Le cancer est une maladie génétique à l’échelle cellulaire qui nécessite de concevoir rapidement des moyens thérapeutiques adaptés et plus efficaces que ceux qui font preuve d’une cytotoxicité non spécifique. Ce projet a pour but de développer des ciseaux moléculaires, dans un but ultime de thérapie anticancéreuse, à partir d’un dérivé très efficace de la camptothécine : le gimatécan (ST). L’utilisation détournée de ce type de molécules utilisées en chimiothérapie nous permet, après couplage à des ligands hautement spécifiques de séquences d’ADN, de cibler des gènes impliqués dans le processus tumoral afin d’y induire un dommage persistant. L’identification des gènes impliqués dans les altérations physiologiques du cancer nous a amené à concevoir un cocktail de conjugués, ou ciseaux moléculaires, de manière à les diriger contre neuf gènes identifiés parmi ceux impliqués dans le processus tumoral. La conception de ces outils s’est initiée par le criblage de ligands de l’ADN tels que les oligonucléotides formant des triplexes (TFOs). Ce travail a permis l’identification de règles permettant de prédire a priori la stabilité d’un triplexe sur sa cible. Il s’est articulé avec la mise au point d’un nouveau procédé de couplage qui a donné lieu à des conjugués plus stables dans le milieu cellulaire. Cette voie de synthèse est dotée d’un meilleur rendement et transposable à d’autres effecteurs tels que les analogues de paire de base appartenant à la famille des aminophenyl-thiazoles. Ces molécules conjuguées à des TFOs ont constitué une nouvelle classe d’inhibiteurs de topoisomérase IB humaine et ont été obtenues pour la première fois par une approche rationnelle. La conception et le déroulement d’un test in vitro de coupure de l’ADN par la topoisomérase IB ont été effectués parallèlement aux premiers essais dans des modèles de cellules cancéreuses. Ces ciseaux moléculaires TFO-ST semblent être efficaces pour inhiber l’expression des gènes. Ces conjugués sont également pourvus d’un intérêt biotechnologique très grand puisqu’ils permettent d’étudier, en temps réel, le mécanisme de la topoisomérase IB à partir de molécules uniques d’ADN isolées par des pinces magnétiques.
5
Mai, Te-Lun, and 麥德倫. "Protein Evolution and Folding of the TOG Superfamily: Transporters, Opsins, and G protein-coupled Receptors." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/55562335998871349628.
Full textAbstract:
博士國立臺灣師範大學
物理學系
104
The protein folding code, known as the second half of the genetic code, is one of the most important problems in molecular biology. Since Christian Anfinsen performed experiments concerning spontaneous folding of proteins, scientists have tried to solve this issue over several decades. It is estimated that 20-30% of all genes in most genomes are encoded to membrane proteins (MPs). MPs play key roles in living cells, and are the primary targets of more than 50% of drugs. In human genome, G protein-coupled receptors (GPCRs) constitute the largest family of integral MPs. GPCRs are involved in cell communication processes and mediate senses such as vision, taste, smell, hearing, and touch. In particular, we are interested in understanding the molecular mechanism for color vision in nervous systems. To achieve our goal, we chose the Transporter-Opsin-G protein-coupled receptor (TOG) superfamily to be the target of our computational studies of protein evolution and folding. In this dissertation, we have studied several aspects of the TOG superfamily, listed as followed: (1) The probable evolutionary relations of proteins could be investigated from protein similarity networks. We applied a clustering approach to provide a panoramic view of isofunctional groups of diverse protein superfamilies. This method is useful in predicting the structures and functions of novel protein sequences, and could explore possible evolutionary examples by visualizing the structures of our clustering networks. (2) Recognition of secondary structure helices and investigation of geometric structures of those helices were studied for MPs. We proposed a simplified algorithm to identify both transmembrane (TM) segments and half TM helices by finding the maximum sum of a hydropathic index with a variable window size, and then combined molecular dynamics simulations and a fold identification algorithm to fold the structural features of TM helices. These two methods provide good results in recognizing and folding TM helices. (3) The folding of molecular architecture for microbial rhodopsins was studied. This portion is the most important part of the protein folding code. We constructed a coarse-grained model based on the physical properties of amino acids, and then used replica-exchange Monte Carlo simulations to model their structures. This method has been used to construct protein models that are close to their experimental structures.
6
Morency-Laflamme, Julien. "Regime crises in Africa : a study of armed forces’ behaviour." Thèse, 2016. http://hdl.handle.net/1866/18518.
Full textAbstract:
Cette thèse de doctorat vise à répondre à une question qui a été largement négligée par la littérature sur les crises des régimes autoritaires : pourquoi les forces armées tolèrent-elles ou répriment-elles les mouvements d’opposition en faveur de changements du régime ? L’hypothèse principale stipule que l’attitude conciliante ou réfractaire des forces armées dépend de la nature des mesures adoptées par le régime autoritaire afin de s’assurer de leur loyauté et prévenir des coups d’État. Lorsque ces mesures de préventions des coups d’État contribuent à créer des divisons au sein de l’armée, les factions marginalisées sont enclines à tolérer les mouvements d’opposition, si ces derniers offrent une alternative crédible au régime, en raison de leur capacité à s’unir autour d’une plate-forme commune de revendications modérées, réalistes et acceptables pour les militaires. À l’inverse, lorsque les mesures de prévention des coups d’État favorisent la cohésion interne de l’armée et son attachement au régime, les militaires adoptent une attitude répressive à l’égard des forces contestataires.
Ces hypothèses sont vérifiées à l’aide d’une analyse comparative des différentes mesures de prévention des coups d’État adoptées par les régimes autoritaires du Bénin et du Togo et de leurs impacts sur le succès, dans le premier cas, et l’échec, dans le second cas, des mouvements d’opposition dans les deux pays, au début des années 1990. Cette analyse est effectuée à l’aide de deux approches méthodologiques : le traçage de processus ainsi que la comparaison de deux études de cas.This Ph.D. dissertation analyzes the factors that influence armed forces’ decisions to tolerate or suppress opposition movements demanding political reforms which could lead to regime change. This dissertation helps to fill a large gap in the literature as only a few scholars have attempted to explain military behaviour during regime crisis. It does so through an analysis of how anti-coup policies and opposition forces’ characteristics lead to the formation of marginalized military cliques and their potential support for regime change. It theorizes that the head of state’s survival strategy, specifically coup-proofing measures, influences military factions’ willingness to preserve the status quo. Reliance on loyalists leads to armed forces with a powerful core loyal to the incumbent regime and willing to use repression, while the strategy of counterbalancing leads to armed forces largely unattached to the maintenance of the regime. Under these circumstances, opposition forces can foster regime defection when they offer a viable alternative to the incumbent government, if the opposition can unify around a moderate platform that provides realist demands vis-à-vis regime forces. The main argument, on the influence of divergent coup-proofing policies on military actions, is assessed through a comparison of Benin and Togo. In each state, authoritarian regimes responded to the challenge of opposition mobilization by initiating negotiation processes. Divergences in coup-prevention techniques and credible commitment capacity of the opposition explain why the opposition campaign in the beginning of the 1990s was successful in Benin but failed in Togo. This research is based on two methods: process-tracing and the comparative method.
Books on the topic "Couples – Togo"
1
Togo: Autopsie d'un coup dÉtat permanent. [Sartrouville]: Atelier de presse, 2006.
Find full text
2
COARE 98 (Conference) (1998 Boulder, Colorado). COARE-98: Proceedings of a conference on the TOGA coupled ocean-atmosphere response experiment (COARE), Boulder, Colorado, USA, 7-14 July 1998. [Geneva]: [World Climate Research Programme], 1999.
Find full text
3
COARE-98 (1998 Boulder, Colo.). COARE-98: Proceedings of a conference on the TOGA Coupled Ocean-Atmosphere Response Experiment (COARE) : Boulder, Colorado, USA, 7-14 July 1998. [Geneva, Switzerland]: World Climate Research Programme, 1999.
Find full text
4
Akhtar, Rajnaara, Patrick Nash, and Rebecca Probert, eds. Cohabitation and Religious Marriage. Policy Press, 2020. http://dx.doi.org/10.1332/policypress/9781529210835.001.0001.
Full textAbstract:
Cohabiting couples and those entering religious-only marriages all too often end up with inadequate legal protection when the relationship ends. Yet, despite this shared experience, the linkages and overlaps between these two groups have largely been ignored in the legal literature. Based on wide-ranging empirical studies, this timely book brings together scholars working in both areas to explore the complexities of the law, the different ways in which individuals experience and navigate the existing legal frameworks and the potential solutions for reform. Illuminating pressing implications for social policy, this is an invaluable resource for policy makers, practitioners, researchers and students of family law.
5
Riess, Jana. The Next Mormons. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190885205.001.0001.
Full textAbstract:
American Millennials—the generation born in the 1980s and 1990s—have been leaving organized religion in unprecedented numbers. For a long time, the Church of Jesus Christ of Latter-day Saints was an exception: nearly three-quarters of people who grew up Mormon stayed that way into adulthood. This book demonstrates that things are starting to change. Drawing on a large-scale national study of four generations of current and former Mormons as well as dozens of in-depth personal interviews, the text explores the religious beliefs and behaviors of young adult Mormons, finding that while their levels of belief remain strong, their institutional loyalties are less certain than their parents' and grandparents'. For a growing number of Millennials, the tensions between the Church's conservative ideals and their generation's commitment to individualism and pluralism prove too high, causing them to leave the faith—often experiencing deep personal anguish in the process. Those who remain within the fold are attempting to carefully balance the Church's strong emphasis on the traditional family with their generation's more inclusive definition that celebrates same-sex couples and women's equality. Mormon families are changing too. More Mormons are remaining single, parents are having fewer children, and more women are working outside the home than a generation ago.
6
Mercati, Flavio. Solutions of Shape Dynamics. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198789475.003.0013.
Full textAbstract:
This chapter deals with the most important results in SD, namely, the classical solutions of the theory in which the equivalence with (GR) breaks down. Firstly, I study the case of homogeneous but not isotropic cosmologies, known as ‘Bianchi IX’ universes in detail. In this case, each solution that reaches the big bang singularity can be continued uniquely through it, just by requiring continuity of the conformally- and scale-invariant degrees of freedom. The result is a couple of cosmological solutions with opposite orientation glued at the big bang. This result is more general than the homogeneous case, and can be extended to a large class of solutions if the BKL conjecture is valid. In the case of spherically symmetric solutions one has to couple gravity to some form of matter in order to have dynamically non-trivial degrees of freedom. The simplest case is a series of concentric infinitely thin shells of dust in a universe with the topology of a three-sphere. In this case too a departure from the dynamics of (GR) is seen, that manifests itself in a failure of the CMC slicing when one of the shells collapses (no spacetime corresponding to that solution of SD exists). The conformally invariant degrees of freedom, again, seem to still be regular when this happens. In the last part of the chapter I will discuss the sense in which one can talk about asymptotically flat solutions of SD, and past results in this regime.
7
James, Henry. Daisy Miller and An International Episode. Edited by Adrian Poole. Oxford University Press, 2013. http://dx.doi.org/10.1093/owc/9780199639885.001.0001.
Full textAbstract:
An inscrutable combination of audacity and innocence’ ... Young Daisy Miller perplexes, amuses, and charms her stiff but susceptible fellow-American, Frederick Winterbourne. Is she innocent or corrupt? Has he lived too long in Europe to judge her properly? Amid the romantic scenery of Lake Geneva and Rome, their lively, precarious relationship develops to a climax in the Colosseum at midnight. The tale gave James his first popular success, yet some compatriots detected treachery in its portrayal of young American womanhood. James responded with ‘An International Episode’, which exposes a couple of English gentlemen to the charm and wit of American sisters in Newport, RI and then in London. Independently read, these short masterpieces probe the manners and morals of a newly emergent transatlantic world. Together they shed light on each other, demonstrating the range of James's own manners, from sharp satire and buoyant comedy to complex, perhaps even tragic, pathos.
8
Vallier, Kevin, and Michael Weber, eds. Religious Exemptions. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190666187.001.0001.
Full textAbstract:
Exemptions from legal requirements, especially religious exemptions, have been a major topic of political debate in recent years. Bakers in various states have sought the right to refuse to make wedding cakes for gay and lesbian couples, despite the Supreme Court’s validation of same-sex marriage. Many parents do not want to vaccinate their children, despite public health laws requiring otherwise, and several states grant exemptions. Various religious organizations as well as some corporations have sought an exemption from the requirement to provide contraceptive coverage in employee healthcare plans, as required by the Affordable Care Act (ACA). Religious exemptions have a long history in the United States, but they remain controversial. Exemptions release some people from following laws that everyone else must follow, raising questions of fairness, and exemptions often privilege religious belief, raising concerns about equal treatment. At the same time there are good reasons to support exemptions, such as respect for the right of religious freedom and preventing religious organizations from becoming too closely intertwined with government. The essays in this volume represent valuable contributions to the complex debate about exemptions from legal requirements. In particular, they contribute to the moral dimensions of religious exemptions. These essays go beyond legal analysis about which exemptions are constitutionally appropriate, instead asking when religious exemptions are morally required or morally prohibited.
9
de Beauvoir, Simone. Preface to The Great Fear of Loving. Translated by Marybeth Timmermann. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252039003.003.0011.
Full textAbstract:
“How do other women do it?” This heart-wrenching leitmotiv is repeated all throughout the collection of testimonies given to us today by the honorable Dr. Weill-Hallé. The exhausted, harassed, frightened, and hounded women who come to ask her for help believe themselves to be the victims of some singular and obscure malediction. To them their despair seems too absolute to not be abnormal. Each one imagines that surely other women know of ways to escape the traps into which they have fallen and the insidious danger that incubates in their blood. But alas, this is far from true. Dr. Weill-Hallé recounts individual cases in a deliberately terse style; each one of these stories makes us feel the throbbing of a unique life, and yet the tremendous and painful import of her book comes from the fact that it gives us a sampling of tragedies that are repeated a thousand times each day. Each year in France, there are at least five hundred thousand abortions, but how many unwanted pregnancies are endured in anguish? How many children are born unwanted, unloved, or mistreated? How many households are devastated by excessive burdens and how many couples are torn apart for fear of another pregnancy? How many women’s careers have been shattered and loves been lost? How many women are tortured by obsessive fears or pushed ...
10
Ahlskog, J. Eric. Dementia with Lewy Body and Parkinson's Disease Patients. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199977567.001.0001.
Full textAbstract:
Patients, spouses, families, and caregivers dealing with dementia face a host of complex issues, particularly when they must confront Dementia with Lewy Bodies or Parkinson's Disease. Until now there has been no guidebook for the general public to help navigate these challenging disorders. In Dementia with Lewy Bodies and Parkinson's Disease Dementia, Dr. J. Eric Ahlskog draws on 30 years of clinical and research work at Mayo Clinic to arm patients and families with crucial information that will enable them to work in tandem with their doctors. A diagnosis of dementia can be devastating, leaving families and caregivers struggling with a loved one's radically-impaired thinking and memory. When dementia is coupled with Parkinson's, which will develop in Parkinson's patients that live long enough, or with Lewy Bodies, which is the second leading cause of dementia behind Alzheimer's, the difficulties become even more daunting. And while these disorders are all too common, most people have little solid information about them. Too often doctors cannot spend the necessary time answering questions or discussing the specific challenges and treatments for these kinds of dementia during office visits. Arriving for a doctor appointment knowing the issues and treatment options beforehand gives patients and families an important head start. Dr. Ahlskog clearly explains all aspects of these disorders, their causes, symptoms, most effective drug treatments, proper doses, and which medications to avoid. He also discusses the complications that can arise in treating these conditions, given the variety of available medications and their possible side effects and interactions. While a cure does not yet exist, in this accessible, highly informative guidebook, Dr. Ahlskog shows that optimal medical treatment can markedly improve the quality of life for both patients and family.
Book chapters on the topic "Couples – Togo"
1
Davey, M., S. Lawrence, C. Gordon, and S. Ineson. "Coupled Toga Models at the Ukmo." In Prediction of Interannual Climate Variations, 107–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-76960-3_6.
Full text
2
Padoongpatt, Mark. "Too Hot to Handle?" In Flavors of Empire. University of California Press, 2017. http://dx.doi.org/10.1525/california/9780520293731.003.0004.
Full textAbstract:
This chapter explores the Thai restaurant boom in Los Angeles in the 1970s and 1980s to show how Thais grappled with U.S. racial, gender, and class structures through the food-service industry. The boom, coupled with new patterns of discretionary spending, turned Thai restaurants into culinary contact zones where sensory experiences reestablished racial boundaries and sustained racial thinking and practices. To distinguish Thai food from other Asian cuisines, Thai restaurateurs—along with white food critics—used race, ethnicity, and nation to produce novelty and product differentiation in the marketing of Thai cuisine. In explaining to the American public how Thais were unique from other Asians based on what they cooked and ate, they relied on taste and smell to construct Thais as an exotic non-white Other. The chapter also discusses how Thai restaurants reinforced, created, and masked gender and class divisions within the community through labor practices behind the kitchen door.
3
Billheimer, John. "The Man Who Knew Too Much (1956)." In Hitchcock and the Censors, 210–14. University Press of Kentucky, 2019. http://dx.doi.org/10.5810/kentucky/9780813177427.003.0029.
Full textAbstract:
The remake of Hitchcock’s 1934 film retained the title and certain key elements of the original, in which the child of a vacationing couple is kidnapped, including the climactic assassination attempt in Albert Hall. But the details of the story changed a great deal. The vacationing couple is American, not English, the kidnapped child is a boy, not a girl, and the wife, played by Doris Day, is a retired musical star rather than an expert marksman. The Production Code office, which had excised five minutes of a climactic gun battle from the original, had relatively few objections to the remake. Censors objected to the kidnapping of a young child, the suggestion that the child’s life might be in danger, and wanted to make it clear that the villain was only ‘posing’ as a minister, not actually a man of the cloth. Hitchcock easily accommodated these suggestions by raising the age of the child to eight and adjusting a few bits of dialogue, reflecting both the gradual weakening of the Code and the director’s increasing skill in dealing with censorship.
4
Rosenstein, Donald L., and Justin M. Yopp. "The Meaning of Life." In The Group. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190649562.003.0020.
Full textAbstract:
Not long after Susan died, Karl traveled to Connecticut to attend a wedding. He anticipated some uncomfortable moments but made it through the ceremony without feeling too sad. The reception was much more difficult. Karl was sitting alone and nursing a drink when the deejay announced: . . . Listen up everybody. I need all the married couples to come out on the dance floor. . . . A dozen or so couples came forward as the deejay explained the rules. . . .I want everyone to keep dancing until I call out the number of years that you’ve been married. Let’s start with an easy one: take a seat if you’ve been married for less than four hours. . . . The smiling bride and groom walked off the dance floor as their guests laughed and applauded. . . . Now, keep dancing if you’ve been married for five years or longer. . . . Several young couples took their seats. . . . Ten years … fifteen years. . . . Karl’s heart sank. He and Susan would never reach that milestone. Their number, 14, was frozen in time. The contest ended when an elderly couple who had been married for more than fifty years were the only dancers remaining. As the guests stood and clapped, Karl sat in silence and scanned the room. The contest winners were on a victory lap of hugs and high-fives. The newlyweds stood to the side of the dance floor staring deeply into each other’s eyes. Karl was alone and Susan was dead. Nothing about this celebration felt relevant to him. The focus of group meetings continued to evolve. In the beginning, the group was mostly a safe place for the fathers to share their grief and feel less alone. It quickly became a practical problem-solving get-together and over time matured into a forum to experiment with personal reinvention. The men and their children had experienced staggering pain that often struck them as completely meaningless. They related to Karl’s experience at the wedding in that they also often felt alone, disconnected, and fundamentally confused about their new place in the world and whether it even mattered.
5
Billheimer, John. "Rear Window (1954)." In Hitchcock and the Censors, 194–99. University Press of Kentucky, 2019. http://dx.doi.org/10.5810/kentucky/9780813177427.003.0026.
Full textAbstract:
Rear Window was the first of six pictures Alfred Hitchcock would direct for Paramount under the contract negotiated by Lew Wasserman. On its first script review, the Production Code office found fault with nearly every aspect of the film, from the salty dialogue of the young screenwriter John Michael Hayes to most of the courtyard residents, including the scantily clad Miss Torso and the newly married couple whose activities represented an ‘unacceptable play on the sexual aspects of a honeymoon.’ But Breen’s reviewers reserved their strongest criticism for the suggestion of a sexual relationship between the lead characters, played by James Stewart and Grace Kelly. Hitchcock stilled many of the censors’ worries by inviting them to visit the elaborate indoor set of the courtyard, pointing out that everything happening in the apartments across the courtyard would be filmed from the viewpoint of a man in a wheelchair looking out of his apartment window, not with salacious close-ups. The censors still found fault with three major elements: the dancing of Miss Torso, the honeymooning couple’s sexual appetites, and Grace Kelly’s negligee, which was ‘too suggestive and too boldly unconventional.’ Hitchcock assuaged these fears by swapping off topless views of Miss Torso with protective footage already filmed for trade-off purposes, drawing the shades on the honeymooners, and limiting scenes with Grace Kelly’s negligee to those essential to the plot. Code officials accepted these trade-offs, and the film was a critical and commercial success.
6
Doyle, Arthur Conan. "• Chapter 5 • Our Advertisement Brings a Visitor." In A Study in Scarlet. Oxford University Press, 2008. http://dx.doi.org/10.1093/owc/9780199554775.003.0007.
Full textAbstract:
Our morning’s exertions had been too much for my weak health, and I was tired out in the afternoon. After Holmes’s departure for the concert, I lay down upon the sofa and endeavoured to get a couple of hours’ sleep. It was a useless...
7
Twain, Mark. "Chapter 6." In Adventures of Huckleberry Finn. Oxford University Press, 2008. http://dx.doi.org/10.1093/owc/9780199536559.003.0009.
Full textAbstract:
Well, pretty soon the old man was up and around again, and then he went for Judge Thatcher in the courts to make him give up that money, and he went for me, too, for not stopping school. He catched me a couple of...
8
Klitzman, Robert L. "Choosing Sperm." In Designing Babies, edited by Robert L. Klitzman, 70–74. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780190054472.003.0005.
Full textAbstract:
Many prospective parents need to seek sperm from others but face complex choices as well. Both sperm and egg recipients wrestle with what to seek in a donor—from medical history to physical appearance or other, behavioral traits that are not necessarily fully inherited. Many heterosexual men resist using another man’s sperm, feeling that doing so impinges on their masculinity. Future parents confront dilemmas, too, of whether to disclose the donation to others, including to their eventual offspring. Many heterosexual couples decide to keep the donation secret and never to reveal it to their offspring. Yet psychological studies show that it is better for offspring to be told in an appropriate manner to avoid later feelings of being betrayed and deceived.
9
Shulman, Terry Chester. "Going South." In Film's First Family, 109–19. University Press of Kentucky, 2019. http://dx.doi.org/10.5810/kentucky/9780813178097.003.0014.
Full textAbstract:
Jack and Dolores are married, finally, but have to wait until they finish their respective pictures before taking off on their planned honeymoon trip to the Galapagos. The couple keep a pair of diaries, quoted liberally in the chapter, which together follow their idyllic voyage every step of the way. Tragedy awaits their return, when Mae suffers a fatal heart attack as Helene lies sleeping in the next room. Dolores’s devastation is complete. Jack suffers too—without Mae’s governing presence, he begins to drink heavily, vastly increasing Dolores’s anguish.
10
Keels, Micere. "(Dis)Integration." In Campus Counterspaces, 152–66. Cornell University Press, 2020. http://dx.doi.org/10.7591/cornell/9781501746888.003.0012.
Full textAbstract:
This concluding chapter takes a step back to examine the bigger picture and suggests ways that colleges and universities could achieve greater integration by attending to difference. Latinx and Black students' college-going identity challenges are often created through institutional action and inaction, and can be resolved through institutional action. Higher education has shown itself to be a revolving door that puts too many Latinx and Black students right back outside their walls, with student debt and without a degree that would lead to the wages needed to service that debt. Although the persistence problem has been foregrounded throughout this work, the chapter shows that the broader goal of campus counterspaces is fostering persistence coupled with psychological, emotional, and cultural well-being. Too many studies show that for historically marginalized students, educational success comes at a high personal cost.
Conference papers on the topic "Couples – Togo"
1
Chichinadze, A. V., S. S. Kokonin, E. D. Braun, and L. V. Chebotarev. "Computational and Experimental Prediction of Multi-Disk Brakes Performance at the Design Stage." In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0374.
Full textAbstract:
Abstract Friction and wear coefficients can vary a lot in multi-disk aircraft brakes under the condition of loaded friction regimes. That is why heat loading, friction duration and distance and also service life calculation procedures, based on constant friction and wear coefficients, are not always applicable to such devices. Such a calculation can provide sufficiently valid results only if experimental data are available, obtained by testing friction couples in a full-scale brake on a test bench. The results will be reliable if a full-scale brake structure is similar to a new one, which is under design, the same friction couple is used and brakes operation modes do not differ too much. It is also possible to use the results of friction couples specimens braking tests, in case the test procedure is based on friction and wear modelling theory recommendations.
2
Regensburger, Brandon, Sreyam Sinha, Ashish Kumar, and Khurram K. Afridi. "A 3.75-kW High-Power-Transfer-Density Capacitive Wireless Charging System for EVs Utilizing Toro idal-Interleaved-Foil Coupled Inductors." In 2020 IEEE Transportation Electrification Conference & Expo (ITEC). IEEE, 2020. http://dx.doi.org/10.1109/itec48692.2020.9161735.
Full text
3
Winck, Ryder C., and Wayne J. Book. "A Control Loop Structure Based on Singular Value Decomposition for Input-Coupled Systems." In ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control. ASMEDC, 2011. http://dx.doi.org/10.1115/dscc2011-6116.
Full textAbstract:
This paper introduces a control structure based on the singular value decomposition (SVD) to control multiple subsystems with reduced inputs. The SVD System permits simultaneous, dependent control of sets of subsystems coupled by a row-column input design. The use of the SVD differs from previous applications because it is used to obtain a low-rank approximation of desired inputs. The row-column system allows many actuators to be controlled by a few inputs. Current control methods using the row-column system rely on scheduling techniques that permit independent actuator control but are too slow for many applications. The inspiration for this new control construct is a pin array human machine interface, called Digital Clay. Some useful properties of the SVD will be discussed and the SVD System will be described and demonstrated in a simulation of Digital Clay.
4
Xie, Z. R., and Y. H. Yang. "Numerical Study on Turbulent Mixed Convection in Plane Channel." In 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48620.
Full textAbstract:
Numerical study on turbulent mixed convection in plane channel is carried out with low-Reynolds number k-ε model coupled with radiation model. Results are compared with experimental data in open literatures. Traditional LS low-Reynolds model and advanced low-Reynolds model SZS low-Reynolds model have been used to compare with experimental data. Results show that there is no general privilege of SZS model over LS model. Although SZS gives better results of mean velocity, it gives too large Nusselt number due to the too larger budget of turbulent shear stress. It is also shown from numerical study that radiation plays a great part especially under the great buoyancy influenced condition.
5
Toti, A., J. Vierendeels, and F. Belloni. "Development and Preliminary Validation of a STH-CFD Coupling Method for Multiscale Thermal-Hydraulic Simulations of the MYRRHA Reactor." In 2016 24th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icone24-60438.
Full textAbstract:
MYRRHA (Multi-purpose hybrid research reactor for high-tech applications) is a lead-bismuth eutectic (LBE) cooled research reactor currently under development at SCK•CEN, the Belgian Nuclear Research Centre. The compact design of the pool-type primary system implies the presence of pronounced 3D thermal fluid-dynamic phenomena, which can affect the evolution of certain accidental transients such as loss of flow (LOF). System thermal-hydraulics (STH) codes, conceived to carry out global NPP safety analyses, present severe limitations in taking into account local 3D phenomena including flow mixing, thermal stratification, etc. To overcome this limitation, a promising solution is coupling STH codes with CFD codes, which can calculate complex flow fields but result, on the other hand, in too expensive computational resources for whole-plant simulations. A domain decomposition method that couples the STH code RELAP5-3D and the CFD code Ansys FLUENT has been developed and implemented. Proof-of-principle tests on simple configurations have been carried out to demonstrate its validity and to identify modeling and numerical issues. The experimental campaign carried out at the test facility TALL-3D, operated by the KTH Royal Institute of Technology in Sweden, has been selected for preliminary verification and validation (V&V) of this method. This paper presents the results of the coupled 1D-3D simulation of a forced-to-natural circulation transient event, whose evolution results to be strongly affected by flow mixing and stratification phenomena. The experimental validation, based on a high-quality set of experimental data, is currently on-going. Further development and validation activities will be carried out in the experimental facility ESCAPE, under commissioning at SCK•CEN, within the recently launched EU project MYRTE (Horizon 2020 programme).
6
Hegyi, Gy, G. Hordo´sy, A. Keresztu´ri, Cs Mara´czy, I. Panka, M. Telbisz, and I. Trosztel. "Development of the Methodology of the Safety Analysis Performed by the Coupled KIKO3D/ATHLET Code System in VVER-440 Type NPP." In 12th International Conference on Nuclear Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/icone12-49300.
Full textAbstract:
In the deterministic safety analysis codes are required in order to provide evaluations of potential nuclear plant accidents. In the fields of the core transient behaviour, the computer codes have achieved a high degree of realistic modelling. Nevertheless, some further tools for the investigations of the wide range of physical phenomena in the whole plant transient, such as modeling the ex-core detector signals and the malfunctioning of the emergency control system are unavoidable, too. The programs and methods used in KFKI-AEKI for safety analysis of VVER-440 NPP are presented. The accident analysis methodology for a boron dilution scenario, in which an inactive coolant loop is started, is shown.
7
Capitani, Renzo, Daniele G. Rosti, and Pierluigi Tozzi. "Multibody Performance Optimization of a Formula SAE Car." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95790.
Full textAbstract:
The dynamic behavior optimization of the Formula SAE car built at the Universita` degli Studi di Firenze is discussed. A virtual model was built using MSC Adams Motorsports, in order to simulate the kinematics and dynamics of the car. A data acquisition system was mounted on board to record all the data useful to setup the car and the virtual model too. The multibody approach was coupled with a multi objective optimizer to start a design of experiments that was able to find the robust design that maximizes the performance along the Formula SAE track.
8
Reichel, Christoph, and Klaus Strohmeier. "Simulation of Tube Bundle Vibrations: A Numerical 3D-Method." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77530.
Full textAbstract:
The shell-side cross-flow in tubular heat exchangers may cause vibrations leading to failure within hours or in long term. Design is still based on half-empirical correlation, based on the equation of Connors (1978). Overdesign (Kassera 1996) and singular cases of damage (Fischer and Strohmeier, 2002) are the result. Therefore a structural model for the tube motions has been developed further and coupled to the commercial flow simulation code ANSYS CFX. The predictive capability of such coupled methods is limited by the flow simulation. Still simplifications or modeling are needed, especially for turbulence. The paper starts with an overview of modeling assumptions used so far. In addition to simulations of flow around rigid circular cylinders (Reichel and Strohmeier, 2008) LDA-measurements of flow through rigid glass-bundles have been compared to flow simulations. The sample of results presented below demonstrates that, besides level of fluctuations is predicted far too low, the overall velocity distribution on the shell side is predicted well by the SST turbulence model (Menter 1994), making URANS models like SST worth a try, if mainly flow forces are needed. To capture the tube dynamics an Euler-Bernoulli beam model of Fischer (2001), discretized by central differences in space and Newmark’s method (1959) in time, has been extended and implemented into ANSYS CFX. Calculations will be presented, showing that simulations of initially deflected tubes almost perfectly match analytic predictions. To adapt the numerical grid for the flow calculations to the tube displacements, the code inherent standard methods at large displacements resulted in negative volumes and solver failure. Therefore the standard methods have been replaced by own routines for grid deformation. Even for grids with fine near wall resolution, this method is able to cope with large displacements. Finally, coupled simulations are conducted of a single cylinder and of a cantilevered tube bundle in cross flow. For the single cylinder amplitudes are extremely overpredicted as long as 2D-modeling is used. 3D-modeling shows a phase shift of vortex shedding along the cylinder, which results in noticeably lower tube deflections. But, using the SST-model, amplitudes are still higher than measured. A model extension for laminar to turbulent transition leads to further improvement. The same holds for the tube bundle. Onset velocity of instability is predicted too low, amplitudes are too high. Modeling transition and large scale 3D-effects moves results closer to experimental observations. Further improvements are expected taking small scale 3D-effects into account by introducing more grid layers along the tubes.
9
Giuntini, Sabrina, Antonio Andreini, Bruno Facchini, Marco Mantero, Marco Pirotta, Sven Olmes, and Thomas Zierer. "Transient Thermal Modelling of Whole GT Engine With a Partly Coupled FEM-Fluid Network Approach." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64512.
Full textAbstract:
The present work aims at investigating a new methodology developed at Ansaldo Energia, for the transient finite element modelling of the whole engine with an axisymmetric approach. The strong coupling and non linearity in the heat transfer process during transient thermal analyses are handled by a partly coupled scheme. The 2D axisymmetric finite element model includes a dedicated thermal fluid network where fluid-metal temperatures are computed. In the overall procedure the selected finite element solver is a customized version of CalculiX®, while mass flow rates and pressure distributions in each thermal fluid network element are provided by external fluid network solvers in terms of customized time series. This paper represents a first insight about a fully integrated WEM (Whole Engine Modelling) procedure currently under development. Geometrical changes during operation, lead to different fluid properties affecting heat transfer coefficients too. These modified conditions in their turn impact the material temperature and displacements. The future implementation steps will be oriented on the adoption of a customized version of the native CalculiX® fluid network solver with the aim of developing a fully integrated procedure able to take into account the interaction between the secondary air system and the modifications in the clearances and gaps due to the thermal and mechanical loads. In this paper, a detailed description of the procedure will be reported with comprehensive discussions about some fundamental modelling aspects. Preliminary results, related to the first application of the new methodology to the transient thermal modelling of a simplified test case representative of real engine geometries, will be presented.
10
Kim, Tae Ho, and Luis San Andre´s. "Analysis of Gas Foil Bearings With Piecewise Linear Elastic Supports." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63397.
Full textAbstract:
Gas foil bearings (GFBs) rely on their underlying elastic foundation to support radial loads at high rotor speeds. The bump foil strip compliance determines the maximum load capacity with large rotor excursions, well in excess of the bearing nominal clearance. GFBs must be designed properly to permit their reliable (predictable) usage in aircraft engines and other heavy load applications because an elastic foundation that is too soft results in a limited load capacity. Configurations in practical use include a second bump-strip layer or stop-pins underneath the original bumps which become active above a certain load threshold. In these last configurations, the overall stiffness of the support structure has piecewise load versus deflection characteristics. Presently, a simple physical model for GFBs with piecewise linear elastic supports follows. The analysis couples the Reynolds equation for the thin film flow of an ideal gas to the elastic supports motion. An exact flow advection model is adopted to solve the partial differential equations for the zeroth- and first- order pressure fields, thus rendering the GFB load capacity and frequency dependent rotordynamic force coefficients. Predictions show that heavily loaded GFBs comprising two bump layers in series and including stop pins prevent too large bump deflections which may induce permanent plastic deformations. The structural damping or loss factor in a GFB with a two bump strip layer enhances the bearing direct damping force coefficients.
Reports on the topic "Couples – Togo"
1
Male engagement in family planning in Togo: Evaluating couples counseling models. Population Council, 2018. http://dx.doi.org/10.31899/rh15.1052.
Full text
2
Engagement des hommes dans la planification familiale au Togo: évaluation des modèles de counseling de couples. Population Council, 2018. http://dx.doi.org/10.31899/rh15.1053.
Full text
3
Engaging men for effective family planning through couple communication: An assessment of two MCSP couple communication approaches in Togo. Population Council, 2019. http://dx.doi.org/10.31899/rh14.1116.
Full text